Associate an extension to the related channel/context?

Asterisk Asterisk Support
1

Hello,

I would like to know of there is a way to get the association of a channel with the extension/context (that would be valid for SIP phones and Zap).
Since I have got only the extension number to initiate a Originate action on behalf of it, I need the channel and context for it. Is the command “show dialplan” the only way to do so or is there a better way?

Thanks for your ideas about that.

bko

2

Not sure what you want to do exactly. Within dial plan, you have access to a handful of predefined variables such as EXTEN, CONTEXT, PRIORITY. You can display them occasionally. From CLI, Asterisk usually displays the context and extension when it first enters this extension.

3

To clarify my question :
Suppose I have got a zap channel zap/1 and that the dialplan sets extension 100 so that it Dials (zap/1).
Now suppose that I am listening to the manager events and receive a NewChannelEvent for channel zap/1. And that I only know that my extension is 100 (usually when a person uses a phone on a PBX he only knows it internal number). How would I know that the NewChannelEvent for zap/1 concerns my phone?
That is why I am looking for a clean way to get the association between the channel and the extension/context that is used to Dial that channel. I guess that this can only be known through the dialplan but I also guess that it is not so simple because the dialplan may use macro or variables…
Thanks.

4

Just so i understand what your getting at (I must not be reading what your saying properly) do you want to do the following?

Say i have an IP phone and my Extension is say 200, you want to actually bind that extension [200] to only use Zap Channel 1-1?

For Instance if you have 4 lines, and 4 Internal phones [SIP, IAX or What ever], you want to bind each one of those Extensions to its own dedicated channel?

Have i got it right?

Cheers,

David.

5

No that’s not what I want to do.
I am using the Manager API without knowing how the PBX is configured (not knowing the dialplan, sip.conf, zap.conf…). I just know the extension numbers assigned to the phones.
The question is :

  • when I receive an event indicating a channel (NewChannelEvent) : how do I know the phone concerned by that event
  • if I want to use the Originate action, how should I fill the channel and context? If I know the context, I can use Local/extension@context.

I would like to know if there is a clean way to get the channel/context with only an extension number. If using the show dialplan, it means that the result should be parsed which is not simple.

Thanks.

6

WHY.

Perhaps you could explain what you want to do.

but iax2 show users and sip show users will show all the info you need for them. write it to a table and do with it what you want.

Ian